Rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and system and method thereof

A technology of rare earth permanent magnet and hydrogen circulation, which is applied in the field of safe hydrogen destruction and efficient hydrogen recycling and reuse systems, which can solve the problems of inability to recover hydrogen, unsuitable recovery, discomfort, etc., and achieve rapid temperature adjustment, no explosion hazard, and energy loss little effect

Active Publication Date: 2016-10-12
CENT IRON & STEEL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the air pump 8 of utility model patent (CN2040355689U) is at the bottom of the upright tank, and the vacuum pump 15 is at the bottom of the gas storage tank, and is not on the circulation circuit, that is to say, if the air pump 8 and the vacuum pump 15 are opened, although hydrogen can be broken into magnetic powder Further dehydrogenation, but the extracted hydrogen will not be able to enter the circuit, it will be extracted and discharged, and the hydrogen in the hydrogen crushed NdFeB magnetic powder cannot be recovered; if the air pump 8 and vacuum pump 15 are not turned on, the hydrogen crushed magnetic powder cannot be further Dehydrogenation, of course, cannot talk about the recovery of hydrogen, let alone the regeneration and recycling of tail hydrogen
In fact, the air pump 8 and the vacuum pump 15 of the utility model patent (CN2040355689U) only play the role of clearing the air in the upright tank and the air storage tank at the beginning of production, and can no longer be used in the future
It is precisely this structure that makes the utility model patent (CN2040355689U) only suitable for storage and release of pure hydrogen, not suitable for the hydrogen crushing process, because the large amount of hydrogen remaining in the hydrogen crushing powder cannot be recycled
Moreover, this utility model patent claims that it is only applicable to the hydrogen fragmentation of NdFeB permanent magnet materials, and is not applicable to the cerium-rich or cerium permanent magnets, mixed rare earth permanent magnets, double (or multiple) main phase permanent magnets involved in the present invention Hydrogen fragmentation of rare earth permanent magnet materials and recovery of dehydrogenated gas

Method used

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  • Rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and system and method thereof
  • Rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and system and method thereof
  • Rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] Example 1-Hydrogen destruction and hydrogen recycling of neodymium iron boron permanent magnet materials

[0123] The hydrogen storage and discharge device 21 is connected to the switch T through multiple through-heads 01 ~T 05 Connected with 5 hydrogen crushing furnaces, the hydrogen storage alloy uses Mg-Ni-based hydrogen storage materials.

[0124] (1) Turn off the through-head connection switch T 01 ~T 05 , Turn off the control switch T of the hydrogen crusher 11 ~T 15 , Turn off the first to seventh control switches T 1 -T 7 ; Then, the rotating hydrogen storage tank 10 is pre-added by the heating device 3, and the rotating hydrogen storage tank 10 is slowly rotated at a speed of 0.1-0.3 m / s, and the Mg-Ni-based hydrogen storage alloy starts to release hydrogen. At the same time, through the vibrating motor charging equipment, the weighed and roughly crushed neodymium iron boron permanent magnet rapid-setting belt is loaded into the hydrogen furnace.

[0125] (2) Turn on ...

Embodiment 2

[0130] Example 2-Hydrogen destruction and hydrogen recycling of cerium-rich or cerium permanent magnet materials

[0131] The hydrogen storage and discharge device 21 is connected to the switch T through multiple through-heads 01 ~T 04 Connected with 4 hydrogen crushing furnaces, the hydrogen storage alloy uses carbon-based nano-hydrogen storage materials.

[0132] (1) Turn off the through-head connection switch T 01 ~T 04 , Turn off the control switch T of the hydrogen crusher 11 ~T 14 , Turn off the first to seventh control switches T 1 -T 7 ; Then, the rotating hydrogen storage tank 10 is pre-added by the heating device 3, and the rotating hydrogen storage tank 10 is rotated at a speed of 0.5-1 m / s, and the carbon-based nano-hydrogen storage alloy starts to release hydrogen. At the same time, through the vibrating motor charging equipment, the weighed and roughly crushed cerium-rich or cerium permanent magnet rapid-setting belt is charged into the hydrogen furnace.

[0133] (2) Tu...

Embodiment 3

[0138] Example 3-Hydrogen destruction and hydrogen recycling of mixed rare earth permanent magnet materials

[0139] The hydrogen storage device is connected to the switch T through multiple through-heads 01 And T 02 Connected with 2 hydrogen crushing furnaces, the hydrogen storage alloy adopts La-Mg-Ni series (AB 3 Type and A 2 B 7 Type) hydrogen storage material.

[0140] (1) Turn off the through-head connection switch T 01 And T 02 , Turn off the control switch T of the hydrogen crusher 11 And T 12 , Turn off the first to seventh control switches T 1 -T 7 ; Then, the rotating hydrogen storage tank 10 is pre-added by the heating device 3, and the rotating hydrogen storage tank 10 is rotated at a speed of about 0.2 m / s, La-Mg-Ni series (AB 3 Type and A 2 B 7 Type) hydrogen storage alloy begins to release hydrogen. At the same time, through the vibrating motor charging equipment, the weighed, coarsely crushed mixed rare earth permanent magnet rapid-setting belt is loaded into the hy...

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PUM

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Abstract

The invention belongs to the technical field of rare-earth permanent magnet materials and relates to a rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and a system and method thereof. A rotary hydrogen storage tank body (10) of the device is made of a hydrogen storage alloy material. An output end (6) and an input end (7) which are symmetrical and communicate with each other are arranged on the rotary hydrogen storage tank body (10). The output end (6) and the input end (7) are each internally provided with a filter screen (1). A sealing rotating shaft (2) is arranged at the outer side of each filter screen (1), and the sealing rotating shafts (2) are mounted on a storage tank rotation driving mechanism. An exhaust opening (5) is formed in the output end (6). A spiral piece (9) is arranged inside the rotary hydrogen storage tank body (10). A heating device (3) and a cooling device (4) are arranged at the outer side of the rotary hydrogen storage tank body (10) in a manner that the heating device (3) and the cooling device (4) are close to but not in contact with each other. The rare-earth permanent magnet hydrogen storage device and the system and method thereof are reasonable in process flow and simple in equipment structure and have industrial application value and wide application prospect.

Description

Technical field [0001] The invention belongs to the technical field of rare earth permanent magnet materials, and relates to a hydrogen storage and release device for hydrogen destruction and hydrogen recycling, neodymium iron boron permanent magnets, cerium-rich or cerium permanent magnets, mixed rare earth permanent magnets, and dual (or multiple) main phases System and method for safe hydrogen destruction and efficient hydrogen recycling of rare earth permanent magnetic materials such as permanent magnets. Background technique [0002] In the production process of rare earth permanent magnet materials, in order to realize the high performance of sintered NdFeB magnets, the total amount of rare earths must be reduced. However, reducing the total amount of rare earths will increase the content of α-Fe phase, and the rapid-setting process must be used. The excellent performance of NdFeB quick-setting belt requires hydrogen crushing process. The hydrogen breaking process (HD proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/02B22F9/04H01F1/057
CPCB22F9/023B22F9/04H01F1/0573
Inventor 朱明刚李卫冯海波宋利伟朱琛瑶刘涛赵扬姜瑞姣
Owner CENT IRON & STEEL RES INST
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